FuturePast
FuturePast lets you have a conversation with AI as though it were speaking to you from any year you choose. Pick a decade, pick a date, and the model answers the way something from that moment in time would, working only from what it would have actually known then.
It’s free to try on the house using a fair-use version of Claude’s smaller model. Bring your own Anthropic API key and you get unlimited use and access to every model, stored only in your browser and sent straight to Anthropic, nothing routed through me or logged anywhere on my end.
I built it because I wanted a way to feel the edges of what AI knows and doesn’t know, and picking a year turned out to be the simplest way to do that.